CN113007758A - Pressure-equalizing air supply cavity and range hood - Google Patents
Pressure-equalizing air supply cavity and range hood Download PDFInfo
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- CN113007758A CN113007758A CN201911329992.1A CN201911329992A CN113007758A CN 113007758 A CN113007758 A CN 113007758A CN 201911329992 A CN201911329992 A CN 201911329992A CN 113007758 A CN113007758 A CN 113007758A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2028—Removing cooking fumes using an air curtain
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Abstract
本申请涉及油烟处理设备技术领域，尤其涉及一种均压送风腔，其包括：风道，包括由侧壁围成的呈环形的中空腔，沿周向设置有多个出风部；进风部，设置于风道的外侧壁，被配置为连通送风机构；其中，中空腔中距离进风部越远的位置，横截面面积越小。在远离进风部的位置中空腔腔壁围成的体积较小，能够在较小风量的情况下，维持一定的风压，进而使各个位置的出风部送风压力均衡。本申请还公开了包含上述均压送风腔的油烟机。
The application relates to the technical field of oil fume treatment equipment, and in particular, to a pressure equalizing air supply chamber, which includes: an air duct, including an annular hollow cavity surrounded by side walls, and a plurality of air outlet parts are arranged along the circumferential direction; The air portion is arranged on the outer side wall of the air duct and is configured to communicate with the air supply mechanism; wherein, the farther the position in the hollow cavity is from the air inlet portion, the smaller the cross-sectional area. In the position away from the air inlet part, the volume enclosed by the cavity wall is small, which can maintain a certain air pressure under the condition of small air volume, so as to balance the air supply pressure of the air outlet part at each position. The present application also discloses a range hood comprising the above pressure equalizing air supply chamber.
Description
Technical Field
The application relates to the technical field of oil fume treatment equipment, for example to pressure-equalizing air supply cavity and range hood.
Background
The range hood is arranged on the upper part of the stove, a negative pressure area is formed in a certain space range above the stove by the high-speed rotation of the main fan, indoor oil fume is sucked into the range hood and is discharged outdoors through the gas flow passage. The existing kitchen range hood increases the height of a high-rise building, the resistance of a flue and the high-altitude wind resistance are increased continuously, and the problems of unsmooth oil smoke absorption and smoke leakage caused by insufficient wind volume and wind pressure are often presented. Some lampblack absorbers are provided with a smoke collecting cavity outside the smoke collecting cavity, and air is supplied into the smoke collecting cavity, so that an air outlet of the smoke collecting cavity forms a smoke collecting air curtain at the periphery of the smoke collecting cavity, and a negative pressure area is formed at a smoke inlet of the smoke collecting cavity, and effective smoking is achieved.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: the airflow pressure received by the smoke gathering cavity is uneven, so that the air pressure of the air outlet of the smoke gathering cavity is unstable, the formed smoke gathering air curtain is not uniformly distributed, and the smoke gathering effect is reduced.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a pressure-equalizing air supply cavity and a range hood, and aims to solve the technical problem that the air pressure of air outlet of a smoke gathering cavity is unstable due to uneven airflow pressure received by the smoke gathering cavity.
In some embodiments, the pressure equalizing plenum chamber comprises: the air duct comprises an annular hollow cavity surrounded by side walls, and a plurality of air outlet parts are arranged along the circumferential direction; the air inlet part is arranged on the outer side wall of the air duct and is configured to be communicated with the air supply mechanism; wherein, the farther position apart from air inlet portion in the cavity, cross sectional area is littleer.
In some embodiments, the range hood comprises the above-mentioned pressure equalizing air supply cavity.
The pressure-equalizing air supply cavity and the range hood provided by the embodiment of the disclosure can realize the following technical effects: the air supply mechanism generates air flow, the air flow enters the air channel through the air inlet part and passes through the annular hollow cavity, and air is discharged from a plurality of air outlet parts in the circumferential direction of the air channel. The pressure-equalizing air supply cavity is applied to the range hood, the air outlet part of the pressure-equalizing air supply cavity is communicated with the smoke collecting cavity, and the smoke collecting cavity receives air flow with balanced pressure, so that a smoke collecting air curtain which is uniformly distributed is formed.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
fig. 1 is an exploded view of a range hood provided by an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a range hood provided by the embodiment of the present disclosure;
fig. 3 is an exploded view of a range hood provided with a pressure equalizing air supply cavity according to an embodiment of the disclosure;
fig. 4 is a schematic view of a range hood provided with a pressure equalizing air supply cavity according to an embodiment of the disclosure;
fig. 5 is a sectional view of a range hood provided with a pressure equalizing air supply cavity according to an embodiment of the disclosure;
fig. 6 is a schematic view of an air outlet portion of a pressure equalizing air supply cavity according to an embodiment of the disclosure;
fig. 7 is a schematic view of an air outlet portion of a pressure equalizing air supply cavity according to an embodiment of the disclosure;
fig. 8 is a schematic view of a range hood provided with a pressure equalizing air supply cavity according to an embodiment of the disclosure;
fig. 9 is a schematic view of a pressure equalizing air supplying cavity and an air supplying mechanism according to an embodiment of the disclosure;
fig. 10 is a schematic view of a separator plate provided by an embodiment of the disclosure.
Reference numerals:
1: a main fan; 2: a fixed tube; 3: an air outlet interface component; 4: an inner barrel; 5: a smoke collecting hood; 6: a housing; 7: an air supply mechanism; 8: a smoke collection cavity; 9: collecting a smoke air curtain; 10: a pressure equalizing air supply cavity; 10.1: a first separator; 10.2: a second separator; 10.21: a first arc surface; 10.22: a second arc surface; 10.3: a hollow cavity; 10.4: an air inlet part; 10.5: a top sidewall; 10.6: a bottom sidewall; 10.7: an air supply space; 10.8: an air outlet part.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
As shown in fig. 1 and 2, the range hood generally includes a main fan 1, and a fixing pipe 2 which is connected to an air inlet of the main fan 1 and is detachable during maintenance, and oil smoke is transported to the main fan 1 through the fixing pipe 2; the air outlet interface component 3 is connected with the outlet of the main fan 1, and the air outlet interface component 3 is communicated with the public flue through a pipeline; an inner cylinder 4 which is connected with the air inlet of the fixed pipe 2 and can slide up and down along the Y axis, and a smoke collecting hood 5 which forms a smoke collecting cavity 8 is fixedly connected below the inner cylinder 4; gather together cigarette wind curtain structure, wherein gather together cigarette wind curtain structure and include wind curtain air supply intermediate layer, wind curtain air supply intermediate layer is formed by the combination of inner tube 4 lower part, collection petticoat pipe 5 and shell 6 and delimits, includes the vertical cylinder intermediate layer part parallel with the Y axle and has the oblique cone intermediate layer part of certain angle with the Y axle. The lower part of the oblique cone interlayer is provided with an air outlet, and airflow flows out from the air outlet to form a smoke collecting air curtain 9. The air outlet is in the shape of a rectangular slit or a wavy slit. The inner cylinder 4, the smoke collecting wind curtain structure and the smoke collecting hood 5 can move up and down together.
The air supply path of the smoke-collecting air curtain structure is as follows: the air supply mechanism 7 pressurizes and blows out the surrounding air, the air is sent into the air supply interlayer of the air curtain to continue to carry out small-range pressure equalization, and finally the air is blown out from the air outlet, so that the effect of reducing the negative pressure area and efficiently gathering the smoke as shown in figure 2 is formed.
The path of the range hood for absorbing the oil smoke is as follows: after oil smoke is generated from the kitchen range, the oil smoke is collected and sucked into the inner cylinder 4 through the smoke collection cavity 8, enters the fixed pipe 2, is pressurized by the main fan 1 and is discharged to the public flue.
As shown in fig. 3 to 5 and 8, according to an aspect of the present invention, there is provided a pressure equalizing air feeding chamber 10, which connects the air feeding mechanism 7 and the smoke-collecting air curtain structure, so that the air blown by the air feeding mechanism 7 enters the smoke-collecting air curtain structure after being subjected to pressure equalization in the pressure equalizing air feeding chamber 10.
In some embodiments, the pressure equalizing air feeding cavity 10 comprises an air duct and an air inlet portion 10.4, the air duct comprises an annular hollow cavity 10.3 surrounded by side walls, and a plurality of air outlet portions 10.8 are arranged along the circumferential direction; the air inlet part 10.4 is arranged on the outer side wall of the air duct and is configured to be communicated with the air supply mechanism 7; wherein any cross section of the hollow cavity 10.3 is the same in size.
Set up in the air supply mechanism 7 of wind channel lateral wall and produce the air current, the air current passes through air inlet portion 10.4 and gets into annular well cavity 10.3, and well cavity 10.3 arbitrary cross section size is the same, can make the air current along well cavity 10.3 steady flow and flow to air-out portion 10.8 to from the air-out portion 10.8 that well cavity 10.3 circumference set up respectively outflow, form the circumference air-out.
The air duct may be made of metal material, for example, the air duct is formed by connecting side walls made of stainless steel or aluminum alloy, and the connection manner may be flange connection or welding. When the flange connection is adopted, the air duct is of a detachable structure, and the inner wall of the air duct can be cleaned regularly; when welding is adopted, the air duct has good tightness and the whole structure has high strength. The air duct can also be made of plastic materials, for example, the air duct is integrally formed in an injection molding or blow molding mode, so that the production efficiency is high, and the cost is low. Because the service environment greasy dirt of lampblack absorber is more, no matter what material is adopted in the wind channel, the inner wall in wind channel can be coated with Teflon or pottery, preventing the oil smoke adhesion from influencing the use at the inner wall in wind channel.
The pressure equalizing air feeding cavity 10 is annular when viewed from above, and is connected with an air inlet of the smoke collecting air curtain structure, so that the shape of the pressure equalizing air feeding cavity 10 when viewed from above can be matched with the shape of the air inlet of the smoke collecting air curtain structure in order to improve the compactness of equipment.
In some embodiments, the ring shape in the hollow cavity 10.3 in the shape of a ring comprises an omega shape. When the middle cavity 10.3 is in an omega shape, an opening is reserved on one side of the air duct, and the pressure-equalizing air supply cavity 10 can be conveniently installed and fixed through the opening. For example, connecting flanges are arranged on two sides of the opening, and the pressure equalizing air supply cavity 10 is connected with the shell of the range hood through the flanges. And the air duct can be arranged into an elastic structure similar to a corrugated pipe, and the elastic structure is stretched and bent into an omega shape during installation and then fixed on the shell of the range hood. Therefore, the same pressure-equalizing air supply cavity 10 is suitable for different sizes of range hoods, the cost is reduced, and the assembly efficiency and the later maintenance efficiency are improved.
In some embodiments, the top sidewall 10.5 of the hollow cavity 10.3 and the bottom sidewall 10.6 of the hollow cavity 10.3 are both horizontally disposed. For example, the top side wall 10.5 of the hollow cavity 10.3 and the bottom side wall 10.6 of the hollow cavity 10.3 are opposite to each other, and are circular or square plate with suitable shape and size, and the inner side wall and the outer side wall are respectively arranged along the peripheries of the two plates and enclose the air duct including the hollow cavity 10.3. Therefore, the top side wall 10.5 and the bottom side wall 10.6 are both horizontally arranged, so that a reference can be found very conveniently in the processing or mounting process, and the mounting difficulty can be reduced while the mounting precision is ensured.
In some embodiments, the hollow cavity 10.3 enclosed by the side walls is rectangular in cross-section. For example, the hollow cavity 10.3 is enclosed by a top side wall 10.5 and a bottom side wall 10.6 which are horizontally arranged and an inner side wall and an outer side wall which are vertically arranged. Like this, four lateral walls in wind channel all are level or vertical regular shape, and not only processing is simple, and is also more convenient when assembling with the lampblack absorber moreover, and the laminating degree is higher.
As shown in fig. 3, in some embodiments, the air duct further includes a first partition plate 10.1 disposed at a communication position between the hollow cavity 10.3 and the air inlet portion 10.4, and the air flow from the air inlet portion 10.4 enters the hollow cavity 10.3 from two sides of the first partition plate 10.1. The first partition plate 10.1 is arranged along the vertical direction, the upper end of the first partition plate is connected with the top side wall 10.5, the lower end of the first partition plate is connected with the bottom side wall 10.6, and the communication position of the hollow cavity 10.3 and the air inlet part 10.4 is divided into two independent parts. The two independent parts can be symmetrically arranged relative to the air inlet part 10.4, so that the air flow can be evenly divided into two parts which respectively enter the hollow cavity 10.3 on the corresponding side; the air inlet part can also be flexibly arranged according to the installation position of the actual air supply mechanism 7 and the shape of the air channel so as to achieve the purpose that the air flow from the air inlet part 10.4 is uniformly divided and enters the hollow cavity 10.3 at the corresponding side. Thus, the air flow from the air inlet 10.4 can quickly fill the hollow cavity 10.3, so that the pressure inside the hollow cavity 10.3 is equalized.
As shown in fig. 3, in some embodiments, the air duct further includes a second partition plate 10.2, the second partition plate 10.2 is disposed at a cross-sectional position of the hollow cavity 10.3, and is symmetrically disposed with respect to the center of the air duct with respect to the first partition plate 10.1, and is configured to divide the hollow cavity 10.3 into two symmetrical cavities. The connecting line of the first partition plate 10.1 and the second partition plate 10.2 passes through the geometric center of the air duct, for example, when the air duct is circular, the connecting line of the first partition plate 10.1 and the second partition plate 10.2 passes through the center of the circle; when the air duct is in a square frame shape, the connecting line of the first partition plate 10.1 and the second partition plate 10.2 passes through the intersection point of two diagonal lines of the square frame. This ensures that the first partition 10.1 and the second partition 10.2 divide the air duct equally into two parts. The shape of the second partition plate 10.2 is matched with the cross section shape of the hollow cavity 10.3, for example, when the cross section of the middle cavity 10.3 is rectangular, the second partition plate 10.2 is rectangular with the same size; when the cross-section of the central cavity 10.3 is circular, the second partition 10.2 is circular with the same dimensions. Therefore, the periphery of the second partition plate 10.2 can be tightly attached to the inner wall of the side wall of the air channel, and air tightness is guaranteed. The arrangement of the first partition 10.1 divides the air flow from the air inlet 10.4 into two parts, and since the hollow cavity 10.3 is annular as a whole, the two parts of air flow will eventually meet in front and eventually mix together. And the front surfaces of the two parts of air flow meet with each other to bring about abnormal air flow such as local vortex and the like, thereby causing the local pressure to rise or fall. The second partition plate 10.2 can prevent the front sides of the two air flows from meeting, so that the phenomenon of increasing or reducing the local pressure is eliminated, and the pressure equalizing effect of the pressure equalizing air supply cavity 10 is improved.
As shown in fig. 10, in some embodiments, the first 10.1 and/or second 10.2 baffles comprise a first 10.21 and second 10.22 cambered surfaces: the first cambered surface 10.21 extends from the inner ring of the air duct to the outer ring of the air duct in an arc line mode and corresponds to one of the cavities; the second cambered surface 10.22 is arranged oppositely and symmetrically to the first cambered surface 10.21 and corresponds to the other cavity. The baffle including first cambered surface 10.21 and second cambered surface 10.22 is whole to be wedge, and two wedge-shaped sides are first cambered surface 10.21 and second cambered surface 10.22 respectively, and wherein two cambered surfaces all are sunken towards wedge-shaped inside. When the first partition plate 10.1 is provided with the first arc surface 10.21 and the second arc surface 10.22, the airflow is divided into two parts and flows along the arc surfaces, the direction of the airflow is changed from the direction towards the center of the ring shape to the tangential direction of the ring shape, and the unstable airflow and the energy loss caused by collision with the inner side wall of the hollow cavity 10.3 are eliminated. When the second clapboard 10.2 is provided with the first cambered surface 10.21 and the second cambered surface 10.22, when two parts of airflow collide with the second clapboard 10.2, the two parts of airflow are changed from the original vertical collision along the normal direction of the second clapboard 10.2 into the collision with the cambered surfaces. After the air flow collides with the cambered surface, the air flow is divided into a force along the tangential direction of the cambered surface and a force pointing to the center of the cambered surface by the counterforce of the partition plate, so that the influence of the counterforce of the partition plate on the air flow is reduced, the buffer effect is realized, and meanwhile, the noise generated by the flow of the air flow in the pressure equalizing cavity is also reduced.
In some embodiments, the air outlet 10.8 is disposed in the bottom sidewall 10.6 of the hollow cavity 10.3. For example, an air outlet is provided on the bottom side wall 10.6, or a plurality of air outlets are provided, so that the air flow leaves the hollow cavity 10.3 along the air outlet or the air outlet and enters the smoke-collecting air curtain structure. Because the direction of air current is whole from top to bottom to voltage-sharing air supply chamber 10 sets up the top of holding together cigarette wind curtain structure usually, consequently with air-out portion 10.8 setting at the end lateral wall 10.6 of well cavity 10.3, it is during the air current can directly get into holding together cigarette wind curtain structure after leaving well cavity 10.3, has improved the efficiency of air supply.
In some embodiments, the air outlet 10.8 is circular or elongated. The round or long strip shape is a conventional easy-to-process shape, and the processing is simple and the cost is low. For example, when the air duct is made of metal material and the air outlet portion 10.8 is a circular through hole, a cylindrical or elongated stamping head can be manufactured to punch a hole in the metal side wall. The cylindrical or strip-shaped punching head is regular in shape, so that the abrasion is small during punching and the service life is long. The outlet 10.8 can also be formed by drilling with a drill or milling with a milling cutter.
As shown in fig. 6, in some embodiments, the farther from the inlet 10.4, the smaller the outlet 10.8. Because the air current from air supply mechanism 7 enters horizontally and flows out of pressure equalizing air supply cavity 10 vertically, the air current can reach the far end quickly, the far end is easier to discharge from pressure equalizing air supply cavity 10 vertically due to the diffusion of the air current, and the air current at the near end needs to change 90 degrees in direction and is difficult to flow out, so that a smaller air outlet part 10.8 needs to be arranged at a position far away from air inlet part 10.4 to prevent the air current from flowing out greatly, thereby improving the pressure in pressure equalizing air supply cavity 10 and forcing the air current at the near end to blow out from vertical air outlet part 10.8. For example, when the air outlet portion 10.8 is a circular hole, the diameter of the circular hole gradually decreases as the distance from the air inlet portion 10.4 increases.
As shown in fig. 8, in some embodiments, the cross-section of the hollow cavity 10.3 is different in size, and the farther away from the air inlet 10.4, the smaller the cross-sectional area. The air supply mechanism 7 generates air flow, the air flow enters the air channel through the air inlet part 10.4, passes through the annular hollow cavity 10.3 and is exhausted from a plurality of air outlet parts 10.8 in the circumferential direction of the air channel, and because the air flow received by the hollow cavity 10.3 at the position close to the air inlet part 10.4 is larger, the generated air pressure is larger, the air flow received at the position far away from the air inlet part 10.4 is smaller than that at the position close to the air inlet part 10.4, and the generated air pressure is smaller, the cross section area of the hollow cavity 10.3 is gradually reduced from the position close to the air inlet part 10.4 to the position far away from the air inlet part 10.4, so that the cavity wall surrounded by the hollow cavity 10.3 at the position far away from the air inlet part 10.4 has smaller volume, a certain air pressure can be maintained under the condition of smaller air flow, and the air outlet.
In some embodiments, the top side wall 10.5 of the tunnel slopes downwardly from a position proximate the air inlet 10.4 to a position away from the air inlet 10.4, as the cross-sectional area decreases further away from the air inlet 10.4. For example, the bottom side wall 10.6 of the wind tunnel is horizontally arranged, and the top side wall 10.5 of the wind tunnel is obliquely arranged at an angle with the bottom side wall 10.6, wherein the vertical projection of the top side wall 10.5 and the vertical projection of the bottom side wall 10.6 can be overlapped to ensure the correspondence of the top side wall 10.5 and the bottom side wall 10.6 up and down. After the top side wall 10.5 and the bottom side wall 10.6 are obliquely arranged, a pressure-equalizing air supply cavity 10 which is wedge-shaped or trapezoidal overall is formed, an air inlet part 10.4 is arranged on the side wall of the wedge-shaped tail part and connected with an air supply mechanism 7, the wedge-shaped tip part is far away from the air inlet part 10.4, and preferably the air inlet part 10.4 is arranged on the opposite side of the tip part.
As shown in fig. 8, in some embodiments, when the top side wall 10.5 of the wind tunnel is inclined downward from a position close to the air inlet 10.4 to a position far from the air inlet 10.4, the height of the top side wall 10.5 far from the air inlet 10.4 is H1, and the height of the top side wall 10.5 near the air inlet 10.4 is H2, H2 > H1 ≧ (1/3) × H2, based on the bottom side wall 10.6. For example, the bottom side wall 10.6 of the air duct is horizontally arranged, and the top side wall 10.5 and the bottom side wall 10.6 are arranged at a certain inclination angle, wherein a certain distance is reserved between the top side wall 10.5 and the bottom side wall 10.6, and the top side wall and the bottom side wall are connected through the inner side wall and the outer side wall. The minimum distance between the top side wall 10.5 and the bottom side wall 10.6 is H1 at a position away from the air inlet portion 10.4 and the maximum distance between the top side wall 10.5 and the bottom side wall 10.6 is H2 at a position close to the air inlet portion 10.4. The minimum distance and the maximum distance are measured on the outer side wall, and the connecting line of the two positions passes through the geometric center of the pressure equalizing air feeding cavity 10. Since the hollow cavity 10.3 receives a larger amount of air flow near the air inlet 10.4 and generates a larger amount of air pressure, the air flow far away from the air inlet 10.4 is less than that near the air inlet 10.4 and generates a smaller amount of air pressure, the cross-sectional area of the hollow cavity 10.3 gradually decreases from the position near the air inlet 10.4 to the position far away from the air inlet 10.4, and therefore, H2 > H1. And because the part of the volume at the position close to the air inlet part 10.4 is larger than the volume at the position far away from the air inlet part 10.4 cannot exceed a certain limit, the excessive overusing is prevented, and the pressure at the two sides is unbalanced again, so that H1 is not less than (1/3) × H2.
As shown in fig. 6, in some embodiments, the farther from the air inlet portion 10.4, the lower the number density of the air outlet portion 10.8. The air supply mechanism 7 generates air flow, the air flow enters the air channel through the air inlet part 10.4, passes through the annular hollow cavity 10.3 and is exhausted from a plurality of air outlet parts 10.8 in the circumferential direction of the air channel, and because the hollow cavity 10.3 receives a large amount of air flow at a position close to the air inlet part 10.4, the generated air pressure is large, the air flow received at a position far away from the air inlet part 10.4 is less than that at a position close to the air inlet part 10.4, and the generated air pressure is small, the density of the air outlet parts 10.8 far away from the air inlet part 10.4 is small, therefore, the air flow flowing out through the air outlet parts 10.8 at the position far away from the air inlet part 10.4 is small, a certain air pressure can be maintained under the condition of small air flow, and the air supply pressure of the air outlet. The change in the number density of the outlet portions 10.8 necessarily results in a change in the total outlet area, for example, the outlet area decreases linearly with distance from the inlet portion 10.4.
As shown in fig. 9, in some embodiments, baffles are disposed at a plurality of cross-sectional positions of the hollow cavity 10.3 of the pressure equalizing air feeding cavity 10 to divide the hollow cavity 10.3 into a plurality of air feeding spaces 10.7, and each air feeding space 10.7 is provided with an air outlet 10.8; an air inlet portion 10.4 is provided on an outer side wall of each air supply space 10.7. The cavity 10.3 in wind channel forms a plurality of air supply spaces 10.7 through set up the baffle in cross section position, and air supply mechanism 7 supplies air to every air supply space 10.7 through air inlet portion 10.4, makes every air supply space 10.7 can both obtain sufficient airflow, and the air current flows out from air outlet portion 10.8 through air supply space 10.7, realizes the pressure-equalizing air-out. When pressure-equalizing air supply cavity 10 was applied to the lampblack absorber, the play wind portion 10.8 that makes pressure-equalizing air supply cavity 10 and the chamber intercommunication of holding together of lampblack absorber, and the air pressure that holds together the chamber and receive is even, and then the wind pressure of air-out is stable, forms even holding together cigarette air curtain to smoke effect has been promoted. The pressure equalizing air supply cavity 10 can be manufactured in various manners, for example, an air duct with an air inlet part 10.4 and an air outlet part 10.8 can be manufactured and molded, a plurality of openings are arranged on the side wall of the air duct at intervals, and then a baffle plate is inserted into the air duct through the openings, so that the baffle plate divides a hollow cavity 10.3 formed in the air duct into a plurality of mutually independent parts; also can make a plurality of mutually independent air supply spaces 10.7 respectively, the both ends in every air supply space 10.7 are blocked through the baffle, then with a plurality of air supply spaces 10.7 end to end connection, form an annular structure, the mode of connection can adopt joint or welded form, like this, can realize modular production and assembly according to the nimble configuration of size of a dimension of lampblack absorber, has practiced thrift the cost, has improved production efficiency.
In some embodiments, the air outlets 10.8 of the air supply spaces 10.7 are arranged in a ring. For example, each of the air supply spaces 10.7 is provided with an air outlet portion 10.8, and the positions of the air outlet portions 10.8 of each of the air supply spaces 10.7 are the same, so that when the air supply spaces 10.7 are connected to form the pressure equalizing air supply chamber 10, the positions of the air outlet portions 10.8 of each of the air supply spaces 10.7 are adapted to the shape of the pressure equalizing air supply chamber 10, and the whole air supply space is annular. When the overlooking shape of the pressure equalizing air supply cavity 10 is a circular ring shape, the arrangement of the air outlet parts 10.8 is also circular ring-shaped; when the top view of the pressure equalizing air supply cavity 10 is square, the arrangement of the air outlet parts 10.8 is also square.
In some embodiments, as shown in fig. 7, the plurality of outlets are distributed in a plurality of radial rows. When overlooking the shape of pressure-equalizing air supply cavity 10 for the ring shape, radially setting up the multirow air outlet along the ring, for example, set up the round air outlet in the position that is close to the lateral wall in wind channel, set up the round air outlet in the position that is close to the inside wall in wind channel, set up the round air outlet in the centre of two circles of air outlets, three circles of air outlets are arranged along the radial direction of ring.
In some embodiments, the baffles are equally spaced apart. Generally, the air inlet flow and the air inlet pressure at each air inlet portion 10.4 are kept constant, so in order to ensure that the air flow output between the air supply spaces 10.7 can keep the pressure and the flow constant, the size of each air supply space 10.7 needs to be the same or approximately the same, and the overlooking shape of the air duct is a structure with opposite geometric centers such as a circular ring shape or a square frame shape, so that the size of each air supply space 10.7 can be ensured to be the same or approximately the same by arranging the equal intervals between the baffles. For example, in some embodiments, the pressure equalizing plenum chamber 10 is circular in plan view, and a baffle is disposed every 120 ° of the circular ring, so that the pressure equalizing plenum chamber 10 is divided equally into three equal-sized plenum spaces 10.7, and each plenum space 10.7 is 1/3 circular rings.
In some embodiments, the air inlet portion 10.4 is disposed corresponding to the middle point of the arc of the blowing space 10.7. Because the air flow is larger at the position close to the air inlet part 10.4 and the corresponding pressure is also larger, the air inlet part 10.4 is arranged at the middle point of the circular arc of the air supply space 10.7 in order to ensure the pressure equalizing effect of the air supply space 10.7. Therefore, the distance between the two ends of the air supply space 10.7 and the air inlet part 10.4 is kept consistent, the pressure is correspondingly kept consistent, the pressure equalizing effect of the air supply space 10.7 is improved, and the air supply space 10.7 can be filled with air flow in the shortest time when the air supply space starts to operate.
According to another aspect of the invention, a range hood is provided, which comprises any one of the pressure equalizing air supply cavities 10. The range hood forms pressure-equalizing air flow by arranging the pressure-equalizing air supply cavity 10, and is favorable for generating a stable smoke-gathering air curtain.
In some embodiments, the range hood further comprises a shell and an inner cylinder for limiting the oil smoke channel, and a smoke collecting cavity is formed between the shell and the inner cylinder; the pressure equalizing air supply cavity 10 is annularly arranged in the smoke collecting cavity, and the air outlet part 10.8 is communicated with the smoke collecting cavity. The lampblack absorber forms the voltage-sharing air current through setting up voltage-sharing air supply chamber 10, makes the air current after voltage-sharing air supply chamber 10, and the voltage-sharing air current flows from the air outlet that holds together the cigarette chamber through holding together the cigarette chamber to form stable cigarette air curtain that holds together, promote and hold together cigarette effect.
The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like herein, as used herein, are defined as orientations or positional relationships based on the orientation or positional relationship shown in the drawings, and are used for convenience in describing and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. In the description herein, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, and indirect connections via intermediary media, where the specific meaning of the terms is understood by those skilled in the art as appropriate.
Herein, the term "plurality" means two or more, unless otherwise specified.
Claims (9)
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| CN201911329992.1A CN113007758A (en) | 2019-12-20 | 2019-12-20 | Pressure-equalizing air supply cavity and range hood |
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| CN201911329992.1A CN113007758A (en) | 2019-12-20 | 2019-12-20 | Pressure-equalizing air supply cavity and range hood |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10205850A (en) * | 1997-01-22 | 1998-08-04 | Akikiyo Motogami | Gas diffuser device |
| JPH10288371A (en) * | 1997-04-16 | 1998-10-27 | Shinpo Kk | Evacuation device |
| CN1384909A (en) * | 1999-10-26 | 2002-12-11 | 大金工业株式会社 | Supply and exhaust device |
| CN2861844Y (en) * | 2006-01-01 | 2007-01-24 | 宁波方太厨具有限公司 | Air-out apparatus for forming air curtain |
| CN101363652A (en) * | 2007-08-06 | 2009-02-11 | 安薪实业有限公司 | Air curtain generating device |
| CN102287060A (en) * | 2011-06-20 | 2011-12-21 | 上海银洲机电科技有限公司 | Toll booth with air curtain machine |
| CN206973823U (en) * | 2017-05-02 | 2018-02-06 | 广州成亿电器有限公司 | A kind of centrifugal fan |
| CN108534200A (en) * | 2018-05-25 | 2018-09-14 | 青岛兴邦电子电器有限公司 | Kitchen ventilator |
| CN208382271U (en) * | 2018-04-27 | 2019-01-15 | 青岛海尔智能技术研发有限公司 | A kind of air curtain structure and kitchen ventilator |
| CN109654572A (en) * | 2019-02-21 | 2019-04-19 | 海信(广东)厨卫系统有限公司 | A kind of air curtain apparatus and kitchen ventilator for kitchen ventilator |
-
2019
- 2019-12-20 CN CN201911329992.1A patent/CN113007758A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10205850A (en) * | 1997-01-22 | 1998-08-04 | Akikiyo Motogami | Gas diffuser device |
| JPH10288371A (en) * | 1997-04-16 | 1998-10-27 | Shinpo Kk | Evacuation device |
| CN1384909A (en) * | 1999-10-26 | 2002-12-11 | 大金工业株式会社 | Supply and exhaust device |
| CN2861844Y (en) * | 2006-01-01 | 2007-01-24 | 宁波方太厨具有限公司 | Air-out apparatus for forming air curtain |
| CN101363652A (en) * | 2007-08-06 | 2009-02-11 | 安薪实业有限公司 | Air curtain generating device |
| CN102287060A (en) * | 2011-06-20 | 2011-12-21 | 上海银洲机电科技有限公司 | Toll booth with air curtain machine |
| CN206973823U (en) * | 2017-05-02 | 2018-02-06 | 广州成亿电器有限公司 | A kind of centrifugal fan |
| CN208382271U (en) * | 2018-04-27 | 2019-01-15 | 青岛海尔智能技术研发有限公司 | A kind of air curtain structure and kitchen ventilator |
| CN108534200A (en) * | 2018-05-25 | 2018-09-14 | 青岛兴邦电子电器有限公司 | Kitchen ventilator |
| CN109654572A (en) * | 2019-02-21 | 2019-04-19 | 海信(广东)厨卫系统有限公司 | A kind of air curtain apparatus and kitchen ventilator for kitchen ventilator |
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